/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Servlets;

import DataBase.BaseDeDatos;
import DataBase.ProductoDB;
import Modelos.Carrito;
import Modelos.Producto;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author erick_dario2492
 */
public class ServletCarrito extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        HttpSession session = request.getSession();
        Carrito carrito;
        if(session.getAttribute("carrito")==null){
            carrito = new Carrito();
        }else{
            carrito = (Carrito)session.getAttribute("carrito");
            session.removeAttribute("carrito");
        }
        String cantidadS = request.getParameter("cantidad");
        String id = request.getParameter("idProducto");
        String url="";
        try {
            int cantidad = Integer.parseInt(cantidadS);
            BaseDeDatos.getConexion();
            Producto producto = ProductoDB.getProducto(id);
            producto.setCantidad(cantidad);
            carrito.agregaProductoACarrito(producto.getId(), producto);
            session.setAttribute("carrito",carrito);
            url="/carrito.jsp";
        } catch(Exception es) {
            url="/Productos?id="+id;
        }
      
        RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(url);
        dispatcher.forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
